Concentric Vs Eccentric Reducer

Concentric Vs Eccentric Reducer

Table of Content

 

 

What is a Pipe Reducer?

Pipe reducer are most common types of pipe fittings that can be used to control the flow within a piping system. Two main types of ASME B16.9 reducer: (1) concentric reducer and (2) eccentric reducer. Also check difference between concentric vs eccentric reducer.

Pipe Reducer Specification

 

 

 

 

 

What is a Concentric Reducer?

What is a Concentric Reducer?

Cone shaped concentric reducer means the pipes have matched center lines and the ecc shaped eccentric pipe reducer has mis matched center lines. Stainless steel concentric reducer design is ideal for vertical pipelines. Concentric pipe reducer is most popular ASME B16.9 reducer used in piping industry, because con reducer aren’t going to need one side of the reducer to remain flat.

 

What is a Eccentric Reducer?

What is a Eccentric Reducer?

Eccentric reducer is a pipe fitting used to connect two pipe of different diameter and different sizes. ASME B16.9 eccentric reducer are used when the pipes have to maintain the same bottom or top level. Stainless steel eccentric reducer ideal for horizontal pipelines.

 

Find Difference Between Concentric Reducer and Eccentric Reducer

Concentric vs Eccentric Reducer: What’s the Difference?

Concentric vs Eccentric Reducer: What’s the Difference?

When To Use Eccentric Vs Concentric Reducer?

When to Use Con Reducer When to Use Ecc Reducer
Maintain centered flow Need to prevent air pockets
Dealing with vertical systems Managing sediment prone systems
Transporting gases or liquids Protect pumps at suction points
Smooth transitions in pump discharge lines Alignment on pipe racks

 

Browse Design Features of Con and Ecc Reducer as per ASME B16.9

Design of Concentric Reducer VS Eccentric Reducer

Design of Concentric Reducer VS Eccentric Reducer

How to Choose the Right Con Vs Ecc Reducer for Your Application?

  • Pipeline Orientation = Horizontal and Vertical
  • Type of Fluid = Liquids with Gas and Clean Liquids
  • Pump Protection = Prevent Vapor and Cavitation Lock
  • Flow and Pressure Requirements = High Pressure

Concentric and Eccentric Reducer Symbol

Concentric Reducer Symbol Eccentric Reducer Symbol
Concentric Reducer Symbol Eccentric Reducer Symbol

Concentric and Eccentric Reducer Application

Concentric Pipe Reducer Application Eccentric Pipe Reducer Application
Chemical Processing Slurry Transport
Oil and Gas Chemical Processing
Water Treatment Pumping Systems
HVAC Systems Wastewater Systems
Oil Transportation Pipeline Best for Horizontal Pipeline

 

Discover Advantages of Eccentric vs Concentric Pipe Reducer

Advantages of Ecc vs Conc Reducer

Advantages of Butt Weld Concentric Reducer Advantages of Butt Weld Eccentric Reducer
Uniform Flow Flow Control
Cost-Effectiveness Air Pocket Prevention
Space Efficiency Sediment Handling

 

ASME B16.9 Reducer Dimensions

ASME B16.9 Reducer Dimensions

NPS Length H O.D. D O.D. D1
26 – 22 610 660 559
26 – 20 610 660 508
26 – 18 610 660 457
24 – 20 508 610 508
24 – 18 508 610 457
22 – 20 508 559 508
22 – 18 508 559 457
22 – 16 508 559 406.4
20 – 18 508 508 457
20 – 16 508 508 406.4
20 – 12 508 508 323.9
18 – 16 381 457 406.4
18 – 12 381 457 323.9
18 – 10 381 457 273
16 – 12 356 406.4 323.9
16 – 10 356 406.4 273
14 – 12 330 355.6 323.9
14 – 10 330 355.6 273
14 – 8 330 355.6 219.1
12 – 10 203 323.9 273
12 – 8 203 323.9 219.1
12 – 5 203 323.9 141.3
10 – 8 178 273 219.1
10 – 5 178 273 141.3
10 – 4 178 273 114.3
8 – 5 152 219.1 141.3
8 – 4 152 219.1 114.3
6 – 2.1/2 140 168.3 73
5 – 4 127 141.3 114.3
5 – 3 127 141.3 88.9
5 – 2 127 141.3 60.3
4 – 3.1/2 102 114.3 101.6
3.1/2 – 2.1/2 102 101.6 73
3.1/2 – 2 102 101.6 60.3
3 – 2 89 88.9 60.3
3 – 1.1/2 89 88.9 48.3
2.1/2 – 2 89 73 60.3
2.1/2 – 1.1/2 89 73 48.3
2 – 1 76 60.3 33.4
2 – 3/4 76 60.3 26.7
1.1/2 – 1 64 48.3 33.4
1.1/2 – 3/4 64 48.3 26.7
1.1/4 – 1 51 42.2 33.4
1 – 3/4 51 33.4 26.7
1 – 1/2 51 33.4 21.3

Difference Between Con Reducer and Eccentric Reducer Weight

NPS Weight in (KG) Schedule STD
24-18 67.13
24-20 68.04
22-16 59.42
22-18 62.6
20-12 54.43
20-16 56.25
20-18 56.7
16-8 31.07
16-12 31.75
14-6 26.31
12-10 15.42
10-5 9.53
10-6 9.75
8-3.1/2 4.99
8-4 4.99
8-6 5.99
6-3 3.63
6-4 3.74
5-2 2.27
5-2.1/2 2.38
5-3.1/2 2.61
4-2 1.36
4-3.1/2 1.59
3.1/2-2 1.25
3.1/2-2.1/2 1.31
3-1.1/4 0.73
3-1.1/2 0.77
3-2 0.82
2.1/2-1.1/4 0.57
2.1/2-2 0.68
2-3/4 0.32
2-1 0.34
2-1.1/4 0.38
2-1.1/2 0.41
1.1/2-1/2 0.23
1.1/2-1 0.28
1.1/4-1/2 0.18
1.1/4-1 0.23
1-1/2 0.18
1-3/4 0.18
3/4-1/2 0.08

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